Updated: 01/08/2018

There’s been a great deal of chatter about Phen375 tablets, so we took it upon ourselves to investigate the side effects, ingredients, customer service and science behind this formula. We also weeded through hundreds of user reviews and comments, only to discover there’s are a lot of customer complaints out there. In the end, we summarized all the facts and details we collected to give you the nitty-gritty on Phen diet pills.

Phen375 Readers: Click here to find out why we're giving away samples of our product, Burn HD.

What is Phen375?

First off, Phen375 is pushed as a scientifically researched advanced formula for weight loss. It aims to increase metabolism, boost energy levels and suppress food cravings. It’s available over-the-counter, so no prescription is needed (this is emphasized on the website). Also, this diet product is manufactured in the USA. Here is a list of ingredients it offers:

Caffeine is a common ingredient found in weight loss supplements. This stimulant can help elevate metabolism, energy levels and concentration/focus. It has especially been shown to be effective when combined with the herb green tea. [1] [2]

Products Similar to Phen375

Shred Jymread
Lean Body For Herread
LeanFire XTread
Thermo Stackread
Burn HD (Sample offer)read

Phen375 Benefits

Let’s take a good look at the benefits of taking Phen375 tabs. Here is what the official website has to say about this diet supplement and what it offers:

  • Reduced food cravings
  • Faster metabolism
  • Appetite suppression
  • Higher energy levels
  • Increased weight loss results
  • Better ability to burn off fat

However, we found some discouraging Phen375 customer reviews posted online, which indicate that this diet product does not deliver the results it claims. Naturally different people will experience mixed reactions to this weight loss pill. Note that the website does encourage customers to cut at least 500 calories from their diets each day to promote weight loss. Eating a variety of healthy foods is also recommended.

Research has shown that creating a calorie deficit can certainly help you lose weight. After all, your body requires a certain number of calories just to maintain its current weight, and when you eat less per day, the body begins to burn off stored fat as a means of energy. [3]

Phen375 Customer Testimonials

Phen375 Customer Complaints

Unfortunately, Phen375 is not accredited by the Better Business Bureau. In fact, this company was given an F rating by the BBB. This is likely due to the list of customer complaints posted. Many of these are due to poor Phen375 customer service. You see, this company offers a 60-day satisfaction guarantee, which is posted clearly on the official website. This means if you are unsatisfied with these weight loss pills, you can return them within 60 days and get a full refund. The problem is customers are being turned down when they ask for a refund.

What’s more, some Phen375 customers were asked to get a doctor’s note to prove they were not losing weight with this diet supplement. Apparently, you must try Phen375 pills for 30 days, along with a diet plan that they prescribe, and then if you fail to lose weight, you are then eligible for a refund. [4]

We took a closer look at the fine print regarding the Phen375 satisfaction guarantee, and this company makes it quite challenging to get your money back. You must speak with a “qualified support staff member” first, and if a return merchandise authorization (RMA) number is provided, then you can return the product.

The Company Behind Phen375

According to the company website, Phen375 is affiliated with Shippitsa ltd. This business has been around since 2004. There is not much info given on this company, and it’s unclear if they offer any other health or weight loss supplements. As for contact information, here is the address provided on the main website:

USA Phen375 Distribution Center
3636 N. Buckner BLVD
Dallas, Texas, USA
Phone: 855-281-8098
International phone: 214-446-0158

There is also a “contact us” form available on the main website, which allows you to submit an email message or inquiry to Phen375 at any time.

How Do You Take Phen375?

You only need to take one tablet of Phen375 each day, along with water. This is an 800-milligram formula, so it’s supposed to be potent. Be aware that you are directed to eat a variety of healthy foods (well-balanced diet) while taking this diet product. Furthermore, you need to cut your daily caloric intake by 500 calories to help improve weight loss results. Also, you should take Phen375 tablets for at least 30 days to see some solid results.

On a side note, reducing your daily calorie intake by 500 calories per day will help you lose weight, with or without Phen 375 pills. This calorie deficit will cause your body to consume some stored fat as a source of energy, which leads to weight reduction.

If you are under the age of 18, or are pregnant or nursing a child, you should not use Phen375. Moreover, if you have a preexisting health condition and are taking a prescription drug, you need to speak with a doctor before taking this weight loss formula. After all, it could cause health problems or clash with the medication you are taking.

Phen375 Ingredients

Now for a better look at what is actually in Phen375 weight loss pills, and whether or not these “highly refined” ingredients are supported by any published research.


An amino acid that is found in foods such as cheese, beef, chicken breast, milk, whole wheat, and codfish. It is also naturally produced by the body and is a building block of protein. This amino acid helps with brain and heart function assists with muscle movement and is important for energy production. [5] [6]

Coleus forskohlii

This herb contains an active component called forskolin, which helps widen blood vessels and may encourage a more powerful heartbeat. It is used in many over-the-counter supplements, and is often taken to treat obesity, allergies, urinary tract infections, asthma, heart problems, low testosterone levels and inflammation. [7] [8] [9]

Caffeine anhydrous

Apowder version (contains no water) of the stimulant caffeine, which is commonly used in supplements. This version is typically more potent and may help boost mental focus and elevate energy levels. Caffeine has also been shown in some studies to suppress appetite and increase metabolism. [10] [11] [12]

Citrus aurantium

Also called bitter orange, this is a citrus plant native to southeast Asia. It contains a chemical called synephrine, which has been shown to increase heart rate and elevate blood pressure. When combined with stimulants such as caffeine, synephrine may help boost thermogenesis and aid with weight loss. Also, it’s often used as an alternative to Ephedra weight loss products. [13] [14] [15] [16]

Cayenne pepper

Also called chili pepper or capsicum annuum, this spicy fruit is used in all kinds of food dishes, as well as over-the-counter diet products. It contains a compound called capsaicin, which may help reduce inflammation, help with satiety and assist with weight loss. [17] [18] [19]

Dendrobium nobile extract

An orchid plant that is sometimes used in traditional medicine, especially in East Asia. It has demonstrated benefits such as reducing inflammation, helping with digestive problems, and treating diabetes. It contains the chemicals dendramine, dendrotoxin and dendrobine. [20] [21] [22]


A mineral that is important for digesting food, balancing blood glucose levels, and supporting insulin function. It’s found in foods such as broccoli, tomatoes, barley, romaine lettuce green beans and oats. It’s also used in some health supplements and diet products. [23] [24] [25]

Calcium carbonate

A chemical compound that is often used to calm stomach acids (antacid). It is found in products like baking soda, dietary supplements and toothpaste. It has been shown to help with indigestion, upset stomach and heartburn. [26] [27] [28]

Therefore, some of the ingredients in Phen375 are backed by real studies. Just to be clear, we did not find any clinical research posted on the official website that applies directly to this product.

Phen375 Side Effects

There are some side effects of Phen375 that should be addressed. We looked at customer feedback from all over the web, and discovered that some users have experienced the following reactions:

  • Headache
  • Upset stomach
  • Dizziness
  • Jitters
  • Changes in bowel movements
  • Fast heartbeat
  • Anxiety
  • Nervousness
  • Nausea
  • Increased blood pressure
  • Abdominal cramps

We also considered the ingredients in Phen375 tablets. After all, certain substances have been linked to adverse reactions. Like some other weight loss products sold online, Phen375 contains a dangerous combination of citrus aurantium (bitter orange) and caffeine (a stimulant). When taken together, these ingredients can lead to serious side effects and health problems. This includes fainting, stroke and even heart attack, reports WebMD. You should speak with your doctor before taking a product that contains this ingredient combination, just to be on the safe side. [29]

Real Phen375 Reviews

You can find Phen375 reviews posted in web forums and on the BBB website. Many of which are negative and discouraging. While some users mentioned side effects from this diet product, others complained about the lack of a solid refund guarantee. [4]

However, there are some Phen375 testimonials, success stories and before and after photos posted on the official website as well. But it is noted that these testimonials are not intended to represent the average weight loss results people see with Phen375 pills. The average weight loss is stated to be 5-10 pounds per month, and this is if you are following a low-calorie diet plan and moderate exercise regimen.

Phen375 FDA Approval?

In a word, no. This is confusing for some dieters because there is a big FDA stamped on the official Phen375 website. But, if you read closely it says that this diet supplement is made in an FDA-approved facility. This does not mean it has been evaluated or approved by the US Food and Drug Administration.

Just to be clear, most dietary supplements are not regulated by the FDA. After all, they are not considered drugs and do not require a prescription from a licensed doctor. Many of them are considered health supplements, but you still need to be careful about which ones you choose to take.

Where to Buy Phen375

You can buy Phen375 online through the official website. No prescription is needed. You simply go to the website and select one of the packages available.

If you are on the lookout for Phen375 Amazon deals or Phen375 GNC specials, you won’t find any. While this diet supplement may have once been sold through these stores, it is not anymore. We did not find this product available from dealers such as Walmart, CVS Pharmacy, Walgreens or any other online dealers. It looks like the official website is the only place that sells Phen375.

Also, there is a new Phen375Ex Formula mentioned on the official website, which is coming soon.

Phen375 Price

The cost of Phen375 varies depending on which option you choose. The official website offers three different packages, which are as follows:

  • One bottle ($65.95)
  • Three bottles ($131.90)
  • Six bottles ($263.80)

Therefore, you can save some money if you want to purchase multiple bottles at once. A single bottle of Phen375 lasts for 30 days. There is a shipping and handling fee of $10 for each order as well.

While there is a 60-day money-back guarantee posted on the official website, be sure to read the specifics carefully. You must take Phen375 for 30 days, along with a reduced-calorie diet plan to apply for a refund. On top of that, you will need to track your progress over the 30-day time frame and provide a “reliable certified statement” that proves you did not see weight-loss results. In other words, you need a note from a licensed physician. Only then will you be eligible for a refund.

Phen375 vs. FENFAST 375

There are other over-the-counter diet products that are similar to Phen375, and FENFAST 375 is one of them. It is touted as a powerful appetite suppressant and thermogenic fat burning aid. This supplement is made by Intechra Health, and also comes in tablet form. Here is a closer look at the benefits:

  • Elevates metabolism
  • Burns off fat
  • Increases energy levels
  • Suppresses appetite
  • Helps with weight loss

Like Phen375, you need to take FENFAST 375 in conjunction with a calorie-controlled diet and regular exercise to see substantial results. As for the ingredients in this diet aid, they include l-theanine, hordenine HCl, caffeine anhydrous, and beta phenylethylamine. This product is also manufactured in the USA but is easy to buy in familiar stores such as Walmart.

Unlike Phen375, you need to take four FENFAST 375 tablets daily, and one bottle will last for 30 days. The cost is $39.50.

But FENFAST 375 contains some ingredients that may cause side effects, such as hordenine HCl, which is similar to bitter orange, and beta-phenylethylamine, which is similar to amphetamines. [30] [31]

All in all, these two diet products are similar and make comparable claims regarding weight loss and energy levels.

The Bottom Line on Phen375

Finally, is Phen375 the answer to your weight-loss needs? For starters, this diet supplement contains some caffeine and chromium, which may help with weight management. There is some actual research that supports these ingredients for weight loss. We also like that you only need to pop one Phen375 tablet each day. Then again, there are a few issues that give us pause as well:

  • We found numerous complaints about Phen375 and their customer service regarding the money-back guarantee.
  • The Better Business Bureau gave Phen375 an F rating, which is a big red flag.
  • The ingredient combination in this diet product may lead to serious health problems, such as heart attack and stroke.

If your goal is to heighten energy levels and shed more pounds, consider adding a diet supplement that does not contain a dangerous ingredient blend, but does come with excellent customer service.

Among the top weight-loss products we’ve encountered is Burn HD. This supplement uses four safe ingredients, all backed by published clinical research when it comes to improving energy and fat loss results. Dozens of customers are already reporting more energy and weight loss, but we didn’t find any mention of harsh side effects.

If that’s not enough, the company behind Burn HD is offering a 2-Week Sample so you can see how it works for yourself. There’s even a hassle-free money-back guarantee!

Learn More About Burn HD »
Phen375 Customers Also Bought:
Effective Ingredients
Sample Offer
Explanation of Chart
Garcinia Cambogia
Caralluma Fimbriata
Raspberry Ketones


What are the ingredients in Phen375?

Phen375 contains caffeine, cayenne pepper, L-Carnitine, dendrobium nobilel extract, coleus forskohlii, and citrus aurantium.

What are the side effects of Phen375?

Dizziness, changes in stool consistency, and insomnia are some of the side effects associated with Phen375.

How do I know if Phen375 is right for me?

Choosing the right product is the #1 question asked by DietSpotlight readers. We recommend trying any product before buying it and know that finding a product with a sample offer is near impossible - so we created our own product, Burn HD, with scientifically backed ingredients.

Click here to get your sample of our powerful fat burner today.

Does Phen375 work?

Some customers have experienced a reduced appetite, increased metabolism, fat loss, and weight loss after taking Phen375.

What is the price of Phen375?

Phen375 costs $43.96 per bottle.

Where can I buy Phen375?

In addition to the official Phen375 website, you can also purchase it at Amazon.com and GNC stores.

How should I take Phen375?

You can take one tablet of Phen375 in the morning, or about 20 minutes before your first meal. If you take a second tablet, make sure to take it several hours before bedtime.

How do I contact Phen375 customer service?

Customers who reside in the United States can contact a customer service agent at 855-281-8098. International customers can call 214-446-0158.

Can I return Phen375?

Purchases can be returned with 48 hours by contacting customer service.

What are the most common complaints about Phen375?

Some customers haven’t experienced the weight or fat loss that is claimed by the makers of Phen375. Others have experienced side effects or have had difficulty returning their order.

Article Resources
Summer Banks Dietspotlight Author
About the Author:

Summer Banks, Director of Content at Dietspotlight, has researched over 5000 weight-loss programs, pills, shakes and diet plans. Previously, she managed 15 supplement brands, worked with doctors specializing in weight loss and completed coursework in nutrition at Stanford University. full bio.

0 Phen375 Reviews